FILE - In this Oct. 24, 2011 file photo, cars are parked on an overfly on a flooded street in Bangkok, Thailand. Sea level rise projections show Bangkok could be at risk of inundation in 100 years unless preventive measures are taken. But when the capital and its outskirts were affected in 2011 by the worst flooding in half-a century, the immediate trigger was water run-off from northern provinces, where dams failed to contain unusually heavy rains. (AP Photo/Apichart Weerawong, File)

FILE - A technician loads patient samples into a machine for testing at Myriad Genetics Friday, May 31, 2002, in Salt Lake City. DNA samples are moved from one tray to another by the eight-needle apparatus at left. The Supreme Court ruled Thursday, June 13, 2013 that Myriad Genetics Inc. cannot patent the BRCA genes, which are tested to check a woman’s risk for breast and ovarian cancer. Mutations in these genes are what led Angelina Jolie to have both her breasts removed because she had such a high cancer risk. Some experts think the court ruling may lead to lower cost testing because there could be more competition. (AP Photo/Douglas C. Pizac)

Dr. Lisa Sterman holds up a Truvada pill at her office in San Francisco on Thursday, May 10, 2012. Sterman prescribes Truvada off-label for about a dozen patients at high risk for developing AIDS. On Wednesday, June 12, 2013, U.S. health officials said the drug is an option for preventing infection in people who inject illegal drugs. (AP Photo/Jeff Chiu)

This image provided by KFOR-TV shows storm clouds moving over Guthrie, Okla., on Thursday, May 30, 2013. The Storm Prediction Center in Norman, Okla., warns there’s a moderate risk of severe weather over much of eastern and central Oklahoma on Thursday, the same area where a tornado last week killed 24 people. (AP Photo/KFOR-TV, Chase Thomason) MANDATORY CREDIT

This image provided by KFOR-TV shows storm clouds moving over Guthrie, Okla., on Thursday, May 30, 2013. The Storm Prediction Center in Norman, Okla., warns there’s a moderate risk of severe weather over much of eastern and central Oklahoma on Thursday, the same area where a tornado last week killed 24 people. (AP Photo/KFOR-TV) MANDATORY CREDIT

In this Feb. 10, 2013 photo, Mariluz Colihuinca plays an accordion during a "Guillatun," a spiritual ceremony to ask for the well-being of the clan and strengthen ties, int he Temucuicui Autonomous community in Ercilla, Chile. President Sebastian Pinera has responded to the tensions between Mapuche Indians with land owners and timber companies by enforcing an anti-terrorism law dating back to Gen. Augusto Pinochet’s dictatorship letting suspects be held in isolation without charges and permitting the use of phone taps and secret witnesses in investigations. Pinera also deployed hundreds of police agents to the region to guard land at risk of of Mapuche attack. (AP Photo/Rodrigo Abd)

FILE - In this March 15, 2013, file photo the Senate Minority Leader, Republican Mitch McConnell of Kentucky, points to a 7-foot stack of Affordable Health Care Act regulations during an event in National Harbor, Md. The health care law has been a political prop for two election seasons already, but next year will be different. if the rollout of the law works reasonably well, particularly in states that have embraced it, there is an risk for Republicans, who have touted it as such a disaster, that enraged voters will reward the GOP with undisputed control of Congress in next year's elections. (AP Photo/Manuel Balce Ceneta, File)

FILE - In this May 16, 2013 file photo, House Speaker, Republican John Boehner of Ohio, points toward the tall stack of paper, representing 20,000 pages of Affordable Care Act regulations, during a news conference on Capitol Hill in Washington. The health care law has been a political prop for two election seasons already, but next year will be different. if the rollout of the law works reasonably well, particularly in states that have embraced it, there is an risk for Republicans, who have touted it as such a disaster that enraged voters will reward the GOP with undisputed control of Congress in next year's elections. (AP Photo/Molly Riley, File)

This color-coded graphic made available by the National Hurricane Center on Tuesday, May 21, 2013, shows an example of a map highlighting the greatest risk of storm surge during a storm. The National Hurricane Center will post maps like this on its website starting this hurricane season to alert residents and businesses of areas where storm surge is possible. The hurricane season goes from June 1 to Nov. 30. (AP Photo/National Hurricane Center)

FILE - In this Dec. 7, 2012, file photo, Utah State basketball player Danny Berger holds a defibrillator, like the one implanted in his chest, following a news conference at Intermountain Medical Center in Murray, Utah. New research is challenging medical guidelines that say people with a heart-zapping device in their chests should avoid intense sports like basketball and soccer in favor of golf or bowling. Increasingly, teenagers and younger adults receive these implants, people who may be more active and fit but have some underlying heart abnormality that puts them at risk of an arrhythmia. Last year, Utah State forward Danny Berger collapsed on the basketball court, was revived and had a defibrillator implanted; he has said he hopes to play again. (AP Photo/Deseret News, Ravell Call, File)

A salt shaker sits next to an advisory at a Boston Market restaurant in Alexandria, Va., Tuesday, May 14, 2014. Boston Market has removed the salt shakers from the tables in their restaurants nationwide. A surprising new report questions how sharply Americans should cut back on salt. Make no mistake: Most Americans eat way too much, not just from salt shakers but because of sodium in processed foods.The Institute of Medicine said Tuesday there's no evidence that cutting well below established guidelines offers any benefit — even though that's recommended for certain people at high risk of heart disease. There are some suggestions that going way too low might harm certain patients. (AP Photo/Cliff Owen)

Salt shakers and other condiments sit on a beverage dispenser table at a Boston Market restaurant in Alexandria, Va., Tuesday, May 14, 2013. Boston Market has removed the salt shakers from the tables in their restaurants nationwide placing them with other condiments on the beverage dispenser table. A surprising new report questions how sharply Americans should cut back on salt. Make no mistake: Most Americans eat way too much, not just from salt shakers but because of sodium in processed foods. The Institute of Medicine said Tuesday there's no evidence that cutting well below established guidelines offers any benefit — even though that's recommended for certain people at high risk of heart disease. There are some suggestions that going way too low might harm certain patients. (AP Photo/Cliff Owen)

An advisory on salt shakers location in seen on a table at a Boston Market restaurant in Alexandria, Va., Tuesday, May 14, 2013. Boston Market has removed the salt shakers from the tables in their restaurants nationwide. A surprising new report questions how sharply Americans should cut back on salt. Make no mistake: Most Americans eat way too much, not just from salt shakers but because of sodium in processed foods. The Institute of Medicine said Tuesday there's no evidence that cutting well below established guidelines offers any benefit — even though that's recommended for certain people at high risk of heart disease. There are some suggestions that going way too low might harm certain patients. (AP Photo/Cliff Owen)

Detroit Mayor Dave Bing speaks during a news conference in Detroit, Monday, May 13, 2013. The first report by Detroit's emergency manager declares that the city is broke and at risk of running completely out of money — a financial meltdown that could mean employees don't receive paychecks, retirees lose their pensions and residents endure even deeper cuts in municipal services. (AP Photo/Paul Sancya)

Detroit Mayor Dave Bing speaks during a news conference in Detroit, Monday, May 13, 2013. The first report by Detroit's emergency manager declares that the city is broke and at risk of running completely out of money — a financial meltdown that could mean employees don't receive paychecks, retirees lose their pensions and residents endure even deeper cuts in municipal services. (AP Photo/Paul Sancya)

Prostate cancer patient Dean Smith, left, a retired marketing executive, meets with Dr. Peter Carroll, right, at the UCSF Medical Center in San Francisco on Thursday, May 2, 2013. Carroll, chairman of urology at the University of California, San Francisco says a study he led on a new prostate cancer test - the Oncotype DX Genomic Prostate Score - suggested it could triple the number of men known to be at such low risk for aggressive disease that monitoring is a clearly safe option. Conversely, the test also suggested that some tumors were more aggressive than doctors had believed. (AP Photo/Eric Risberg)